all stock speedy I'll run 95 - 102 miles before reserve running 90+ mph for almost the full run. (rt 50 from DC to Annapolis and back) there are 2 or 3 miles on each end below 35 mph.
rolling only around the city with no more than 35-40 I've done 156 as my best before needing to switch over.
I keep the bike upright between my legs and my butt off the seat and fill the tank right to the edge when gassing up.